Wt is his total utility after eating each piece -


Homework #3

1. In 2005, the nominal wage per hour was $10 in Japan and $6 in South Korea. In the same year, the CPI in Japan was 100, and the CPI in South Korea was 50. Evaluate the following statements and argue whether they are true or false.

a. In 2005, the real wage in South Korea was lower than in Japan.
b. In 2005, the real wage in South Korea was higher than in Japan.
c. The real wages in both countries were the same in 2005.
d. The nominal wages in both countries were the same in 2005.

2. Jerry is at a party where free pizza is being provided. The following table gives the marginal utility that Jerry gets from eating each piece of pizza.

Pieces of Pizza

Marginal Utility

Total Utility

0

0

 

1

20

 

2

15

 

3

10

 

4

5

 

5

-5

 

6

-10

 

a. What is his total utility after eating each piece?

b. Assuming Jerry can only consume whole pieces of pizza (in that he is not allowed to eat a fraction of a piece), how many pieces would Jerry choose to eat?

3. Fred consumes only bread (measured in loaves of bread) and soda (measured in cans of soda). The following points give 3 of his indifference curves for consumption in a given week.

Indifference Curve A

 

Indifference Curve B

 

Indifference Curve C

Bread

Soda

 

Bread

Soda

 

Bread

Soda

1

10

 

1

15

 

1

6

2

6

 

2

10

 

2

4

5

4

 

4

9

 

3

3

6

4

 

7

8

 

6

2

a. Plot these three indifference curves on the same graph with bread on the x-axis and soda on the y-axis. Which indifference curve represents the highest level of utility?

b. Soda costs $1 per can and bread costs $1 a loaf. Fred has $12 to spend on these goods each week. Derive his budget line and plot it on your graph.

c. Given the three indifference curves and the budget line, what is Fred's optimal choice of soda and bread? What is the marginal rate of substitution at this bundle? Why?

d. Now suppose the price of bread increases to $3 a loaf.

i. Draw the new budget line.

ii. What is his optimal consumption now?

iii. By how much did his soda consumption change?

iv. On your graph, identify the change in soda consumption caused by the income effect. Draw the change in soda consumption from the substitution effect.

v. Did the income effect or substitution effect play a stronger role in his decision on how much soda to consume?

4. Peter has $320 to spend on either T-Shirts or hats. Figures (a), (b), and (c) show Peter's consumption when he is facing different price levels. Derive and draw Peter's demand curve for hats.

963_Draw Peters demand curve for hats.jpg

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Microeconomics: Wt is his total utility after eating each piece -
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